Directly from Webasto on EVSolutions.com, TurboCord 240V EVSE $199 + Tax (at least in CA) with free UPS ground.
20ft charging cable
16A @ 240V
Circuit breaker – 20A @240/208VAC
UL, cUL listed
NEMA 6-20 plug
These typically are $300-500. A niche product, but if you are looking for an EVSE with a 6-20 plug, this is probably the best one on the market. Charges at about 9-15 mph.
Also available at this price on Amazon.